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The Anatomy of a Large-Scale Hypertextual Web Search Engine PDFWe present Google, a prototype of a large-scale search engine which makes heavy use of the structure present in hypertext. Google is designed to crawl and index the Web efficiently and produce much more satisfying search results than existing systems. The prototype with a full text and hyperlink database of at least 24 million pages is available at http://google.stanford.edu/ To engineer a search engine is a challenging task. Search engines index tens to hundreds of millions of web pages involving a comparable number of distinct terms. They answer tens of millions of queries every day. Despite the importance of large-scale search engines on the web, very little academic research has been done on them. Furthermore, due to rapid advance in technology and web proliferation, creating a web search engine today is very different from three years ago.
This paper provides an in-depth description of our large-scale web search engine — the first such detailed public description we know of to date. Apart from the problems of scaling traditional search techniques to data of this magnitude, there are new technical challenges involved with using the additional information present in hypertext to produ e better search results. This paper addresses this question of how to build a practical large-scale system which can exploit the additional information present in hypertext. Also we look at the problem of how to effectively deal with uncontrolled hypertext collections where anyone can publish anything they want.
Download The Anatomy of a Large-Scale Hypertextual Web Search Engine PDFBoKS Access Control for Desktops and Microsoft Active DirectoryWith Active Directory, Microsoft has provided administrators with a powerful directory service to organize network data and to control access to network resources from a central point. However, "powerful" by necessity also means complex, and the complexity of Active Directory has probably contributed to slowing down the rollout of Windows 2000 and 2003 servers. Initially, many organizations found simply migrating their flat NT4 domain structures into a more sophisticated Active Directory wrapping to be a significant challenge. By now, many have defined their Active Directory Forests, survived an often cumbersome deployment process, and seen their directories mature into efficient tools for centralized administration. Policies have become the levers of network management, and, as a result, Active Directory has become a repository holding extremely sensitive data.
Passwords Remain the Weakest Link in the Security Chain
Surprisingly, in most organizations, authentication is still based on passwords only, regardless of how sophisticated their use of Active Directory otherwise may be. Ideally, in a pure Windows 2000 / XP environment, Windows clients use NTLM 2 or Kerberos to protect authentication requests, which is certainly a great improvement compared to the old LM or NTLM 1 protocols. Yet, by default and for backwards compatibility, Windows clients will revert to the old, weaker protocols if required to do so by one of the nodes involved.
Although you can configure clients to refuse LM and NTLM 1 communication, this may conflict with other important services, and the gain is limited since password cracking tools such as @stake LC™ 5 (L0phtCrack™),Building a Better Style GuideWhy are style guides so frequently created, but so rarely successful? All too often, businesses ask for a style guide as a means to create a common look and feel, in the belief that it will solve usability problems and establish consistency between applications – only to be disappointed in the results. Even if such a style guide is followed carefully, the resulting interfaces may not meet usability goals.. This paper explores strategies for creating a style guide that is more than a simplistic rules book. By making the style guide part of the process, it can be used to promote a shared vision, to help the product meet business and usability requirements for consistency and…it may actually be used.
All too many projects to improve the usability of a user interface start with a request to create a style guide. To many user-centered designers, a style guide is the documentation of a design – the end of a design process – not a starting point for usability. And yet, we continue to create them, despite that fact that they may do little to address real usability problems or create a common approach to interaction. This paper describes some tactics and techniques for creating style guides that present and organize the appropriate information in a usable structure.
WHAT’S IN A STYLE GUIDE?
Style guides can be classified as platform (or language) guide, general design guides, or corporate style guides for a specific application. Although they overlap in many ways, each has a differentRuby in Rails Short Reference Version 1.1.2Invisible Ruby on Rails Reference 1.1.2 This is a “short” Ruby on Rails reference. It’s goal is to give you an overview over the most used functions/methods / classes. It’s not tutorial, but as a handy guide when you are already know your way around. 2 Railties 2.1 Create a rails application
$ rails app_name
Options:
-d, databse=xxx sepciify which database to use (mysql oraqle postgresql sqlite2 sqlite3), defaults to mysql
-r, ruby-path=specify the path to ruby, if not set, the scripts use env to find ruby
-f, freeze freezes Rails into the vendor/rails directory
Download Ruby in Rails Short Reference Version 1.1.2Introduction to PhotoshopPhotoshop is the industry-standard image rendering software. You can use Photoshop to create customized graphics, edit photographs and make flyers and images for print as well as for the web. This handout provides a simple how-to guide to familiarizing yourself with the Photoshop environment.
The Photoshop Environment
Photoshop Toolbox
The Photoshop toolbox is the most important user interface with this complex program, and includes the primary tools to work with graphics. These include the tools that let you use type, and select, paint, draw, sample, edit, move, annotate, and view images. Other tools in the toolbox allow you to change foreground/background colors, go to Adobe Online by either clicking the feather Adobe logo at the top of the pallet or by going to File > Adobe Online.
Overview of the tools
To view the name of a tool button, hold your mouse pointer over the tool you want to see, and the name will appear as a tool tip. (See the image right.) Some tool buttons have multiple tools combined into one button. Tool buttons with multiple tools have a small triangle in the lower right hand corner of the button. Right click and hold this button to view the alternate tools
Download pdf Introduction to PhotoshopA MySQL TutorialThis part will help you familiarize yourself with MySQL by providing a tutorial for you to try. As you work through it, you will create a sample database and some tables, and then interact with the database by adding, retrieving, deleting, and modifying information in the tables. During the process of working with the sample database, you will learn the following things:
• The basics of the SQL language that MySQL understands. (If you already know SQL from having used some other RDBMS, it would be a good idea to skim through this tutorial to see whether MySQL's version of SQL differs from the version with which you are familiar.)
• How to communicate with a MySQL server using a few of the standard MySQL client programs. As noted in the previous section, MySQL operates using a client/server architecture in which the server runs on the machine containing the databases and clients connect to the server over a network. This tutorial is based largely on the mysql client program, which reads SQL queries from you, sends them to the server to be executed, and displays the results so that you can see what happened. mysql runs on all platforms supported by MySQL and provides the most direct means of interacting with the server, so it's the logical client to begin with.
• This tutorial uses my_super_db as the sample database name, but you might need to use a different name as you work through the material. For example, someone else on your systemInstall Nvidia and ATI Video Drivers on openSUSE PDF ReviewATI/Nvidia installation guide for openSUSE 10.2 Let’s say you have chosen openSUSE 10.2 as your default Linux distribution and now you need to install your video card’s driver, be it either Nvidia or ATI. This guide will teach you the easiest ways to achieve that. Nvidia Installation We first need to install the official openSUSE Nvidia repository. Open up a console and type the following: [CODE=0]rpm –import ftp://download.nvidia.com/novell/repodata/repomd.xml.key [CODE=1] Now let’s add the YUM repository, by opening YaST and clicking on “Software” and then on the “Installation Source”.
In the new window which will appear, click the Add button, then select the “Specify URL…” option, hit Next and paste there the following line:
Download Install Nvidia and ATI Video Drivers on openSUSE PDF ReviewSANAKO Media Assistant v. 6.0 User GuideLearning languages is hard work that demands intensive study and practice. However, the right tools can make learning easier and, perhaps most importantly, an enjoyable experience.
SANAKO Media Assistant is a digital recorder operated with Microsoft Windows 98, ME, 2000 or XP. Media Assistant is the most comprehensive tool for learning languages in a multimedia PC environment. As opposed to most media players on the market, Media Assistant is not only a digital player but a recorder as well, offering unlimited possibilities for language practice. For example, you can practice listening comprehension, pronunciation and speaking drills, and oral presentation.
SANAKO Media Assistant is a purely software solution, with a software platform that is easy to upgrade in the future. Media Assistant supports a wide spectrum of file formats and enables the conversion of analog learning material, both audio and video, to digital format. You can also download RealAudio and RealVideo material from the Internet and edit it as you wish.
SANAKO Media Assistant is available in three versions designed for multimedia environment. SANAKO Media Assistant Lite and Solo are both stand-alone versions for independent language study – Lite for individual home learners and Solo for classrooms in institutional, educational environment. Duo is a networked version designed for multimedia classrooms. All features described in this guide apply to Solo and Duo, except for the next-to-last chapter, which describes additional language lab features in Duo.
Download pdf SANAKO Media Assistant v. 6.0 User GuideGPSprimer color versionSometimes lighthouses provided a light to guide mariners at night and warn ....Buoys tracking major oil spills transmit data using GPS to guide cleanup
A student guide to the Global Positioning System T H E A E R O S P A C E C O R P O R A T I O N The Sky's the Limit The men and women who created the Global Positioning System, more commonly known as GPS, were once young people like you. Each had a special interest in the marvelous order of mathematics and the physical laws affecting all of our lives. By puuing caree in science or engineering, they were able to develop a remarkable navigation system that can tell you exactly where you are on Earth at any time of day or night and in any type of weather. This booklet was developed by The Aerospace Corporation to help you undetand GPS and how it works. If you are interested in an exciting career in navigation or a related field, we encourage you to study mathematics and science in junior high and high school.
Download PDFRenault Autograph PDFRenault Autograph Technical specification 1.2 16v 1.5 dci 65 1.5 dci 80 1.6 16v auto TECHNICAL CHARACTERISTICS Drag Co-efficient/Area (Cd/A)0.35 0.35 0.35 0.35 BODY TYPE Number of Doors 55 55 Body Type Classification MPV 5 door estate MPV MPV ENGINE Engine Capacity 1149 1461 1461 1598 Injection Type Multipoint Commonrail Direct Commonrail (turbo)Direct Multipoint Fuel Type Unleaded Diesel Diesel Unleaded Number of Cylinders 44 44 Number of Valves 16 8 8 16 Max engine power -kW (hp)rpm 55 (75)5500 65 (48)4000 60 (82)4250 70 (95)5000 Max torque -Nm (rpm)105 (3500)180 (2000)185 (1750)148 (3750) TRANSMISSION Type JB1 JC5 JC5 DPO Number of gears 5 5 5 auto BRAKING Front (discs)mm 259 259 259 259 Rear drum TT TT TYRES Tyre Size 175/65 R14 VP 165/70 R14 VP 175/65 R14 VP 175/65 R14 VP STEERING Turning circle between kerbs 10.4 10.4 10.4 10.4 CAPACITIES Fuel Tank -Litres (Gallons)50 (11)50 (11)50 (11)50 (11) Cargo volume under shelf (l)650 650 650 650 With rear bench seat folded (l)2600 2600 2600 2600 PERFORMANCE 0-62mph (0-100kph)14.2 16.3 12.5 12.4 Maximum Speed -mph (kph)96(154 )91 (146)96(155 )101(162 ) FUEL CONSUMPTION CO2 (g/km)165 146 139 190 Urban cycle-mpg 31.4 43.5 44.1 25.7 Urban cycle -litres/100km 9.0 6.5 6.4 11.0 Extra Urban -mpg 47.9 57.6 61.4 44.8 Extra Urban -litres/100km 5.9 4.9 4.6 6.3 Combined -mpg 40.4 51.4 53.3 35.3 Combined -litres/100km 7.0 5.5 5.3 8.0 WEIGHT Kerb weight -kgs 1035 1120 1095 1120 Gross vehicle weight -kgs 1570 1620 1630 1645 STYLE FEATURES Authentique Expression Body coloured bumpers
